DJ,
sharing my views on your questions.
ST, feel free to add your views as well on these questions.
1. Can we buy a covered call on NIFTY futures? I mean can we buy nifty futures and sell an OTM call option so that if the call option becomes ITM, the buyer of the call option will exercise the option and we can offload. If nifty futures go down, we can pocket the premium.
Covered call, by nature, is bullish strategy. You can very well execute it with futures, instead of using stocks as underlying instrument. Only difference is, you don't have to worry about the exercise of sold call
option on Index futures because they can be settled / excercsied only on expiry.
If nifty goes down, u are protected only till the limit of the premium that u have recived on call. If it falls beyond that level then u will be in loss.
Another point to keep in mind is the Delta - i.e. change in option price for each point change in stock/futures. Delta for Future / stock is 1 whereas for option it might be around 0.5 for OTM option or any other value less then 1. So when futures /stock gains 1 point,you option might just gain 0.5 points. So to cover your futures position and make this completely hedged, u need to double the quantity of options.
2. For stocks can we buy covered call buying stock futures instead of stocks in cash?
Yes. Nobody stops you from doing this. Only thing is you need to understand the risk involved in futures trading (i..e leverage provided). If you are tempted to this due to limit account size, then my advise will be to put strict stoploss on your futures position to limit your loss beyond what is covered by sold call premimum + brokerage etc.